Abstract: Presently disclosed is a system for attribute-based transaction categorization that utilizes transaction designation attributes other than or in addition to a payee name to provide reduced user effort and improved accuracy in the categorization of transactions. Further, the system for transaction categorization may retroactively re-categorize and/or re-name previous transactions based on subsequent transaction categorization. The transaction categorization system may assign match scores based on the number and/or type of designation attributes that match rules for associating a designation to a transaction. If a match score exceeds a predetermined threshold and/or is greater than other match scores, the transaction is automatically designated. Otherwise, the user may manually designate the transaction. Manually designated transactions may be used by the transaction categorization system to generate new designation rules.